Home / 3,991.57-5,508.54-2,223.18

Finding the Fourth Proportional to 3,991.57, 5,508.54 and 2,223.18

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Solution

The fourth proportional to 3,991.57, 5,508.54 and 2,223.18 is: 3,068.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.57 : 5,508.54 = 2,223.18 : x
  2. Step 2: Convert to fraction form
    3,991.57/5,508.54 = 2,223.18/x
  3. Step 3: Cross multiply
    3,991.57x = 5,508.54 × 2,223.18
  4. Step 4: Simplify right side
    3,991.57x = 12,246,461.82
  5. Step 5: Solve for x
    x = 12,246,461.82/3,991.57
  6. Step 6: Final answer
    x = 3,068.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.